Prepare for NEET with Botany-specific practice questions. Covering all major Botany chapters, this is perfect for your NEET Biology needs.
The 'open' vascular bundles found in dicot stems are characterized by:
Scattered arrangement of xylem and phloem with no cambium.
The presence of cambium between xylem and phloem, allowing for secondary growth.
Joint, collateral arrangement of xylem and phloem with no cambium.
Concentric arrangement of xylem and phloem.
The arrangement of vascular bundles in a monocot stem is best described as:
Arranged in a ring
Scattered
Bicollateral
Amphicribral
The arrangement of vascular bundles in a monocot stem is:
Ring-like
Scattered
Radial
Conjoint and collateral
In a dicot stem, the pith is located:
Outside the vascular bundles
Between the xylem and phloem
In the center, surrounded by the vascular bundles
Within the vascular bundles
In a conjoint, collateral, and open vascular bundle, which tissue separates the xylem and phloem?
Cambium
Pith
Cortex
Pericycle
In a monocot stem, the scattered vascular bundles are surrounded by a sclerenchymatous sheath. This sheath primarily functions to:
Store starch and other carbohydrates for the plant.
Regulate the transport of water and nutrients within the bundle.
Provide mechanical strength and support to the vascular bundles.
Facilitate gaseous exchange between the vascular tissues and the surrounding parenchyma.
Which of the following features distinguishes a monocot vascular bundle from a dicot vascular bundle in the stem?
Presence of a well-developed pith and a ring of vascular bundles
Presence of a sclerenchymatous bundle sheath and absence of cambium
Presence of a continuous vascular cylinder and presence of cambium
Presence of conjoint and open vascular bundles with a prominent pericycle
Which of the following is NOT a characteristic of a dicot stem?
Ring-like arrangement of vascular bundles
Presence of pith
Presence of cambium
Scattered vascular bundles
Which of the following is NOT a characteristic of a monocot stem?
Scattered vascular bundles
Presence of a well-defined pith
Absence of secondary growth
Presence of ground tissue
The vascular bundles in a monocot stem are:
Open and arranged in a ring
Closed and scattered
Open and scattered
Closed and arranged in a ring
